Lenovo HS22V Betriebsanweisung PDF herunterladen (Seite 9)

High-performance blade server optimized for virtualization

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with 6GB, 12GB, 18GB, 24GB, 48GB, 72GB, 96GB, etc., for optimized performance.

Power guidelines:

 Fewer larger DIMMs (for example, 6 x 4GB DIMMs vs. 12 x 2GB DIMMs) will generally have

lower power requirements

 x8 DIMMs (x8 data width of rank) will generally draw less power than equivalently sized x4

DIMMs

Reliability guidelines:

 Using fewer, larger DIMMs (for example 6 x 4 GB DIMMs vs. 12 x 2GB DIMMs) is generally

more reliable

 Xeon 5600 series and 5500 series memory controllers support IBM Chipkill memory

protection technology with x4 DIMMs (x4 data width of rank), but not with x8 DIMMs

For increased availability, the HS22V offers two additional levels of IBM Active Memory

protection: memory mirroring and memory sparing.

Memory mirroring works much like disk mirroring. The total memory is divided into two channels.

Data is written concurrently to both channels. (The third channel is unused.) If a DIMM fails in one

of the DIMMs in the primary channel, it is instantly disabled and the mirrored (backup) memory in

the other channel becomes active (primary) until the failing DIMM is replaced. With mirroring

enabled, one-third of total memory (6 DIMMs) is available for use. (Note: Due to the double

writes to memory, performance is affected.) Mirroring is handled at the hardware level; no

operating system support is required.

In memory sparing, one of the three memory channels (Ch2) for each processor is reserved as a

spare for the other two channels (Ch0 and Ch1). This means that unlike mirroring (where one

third of the memory is reserved for redundancy and one-third is unused), with sparing only one-

third is reserved, leaving two-thirds (12 DIMMs) available as usable memory. Note: Although

DIMMs within a channel do not have to be identical, the DIMMs in each of the three channels

must be identical to the other channels regarding capacity and organization. (In other words, if

the DIMMs in Ch0 are 2GB 2Rx4, 8GB 1Rx8, and 4GB 2Rx4, respectively (all 1.35V), then the

DIMMs in Ch1 and CH2 must also be 2GB 2Rx4, 8GB 1Rx8, and 4GB 2Rx4 (all 1.35V), in that

order.)

DDR3 memory is available in 1GB, 2GB, 4GB, 8GB, and 16GB DIMMs. DIMMs are installed

individually by processor. In other words, individually in a 1-processor system, or in pairs for a 2-

processor system.

Integrated Virtualization

All models of the HS22V support a USB 2.0 Flash Key installed preloaded with VMware

vSphere Hypervisor (formerly ESXi). Rather than management through a Service Console

based on a Linux operating system, vSphere Hypervisor relies on aggregate management tools,

including VirtualCenter, the Remote Command Line interface and the introduction of CIM for

standards-based and agentless hardware monitoring.

vSphere Hypervisor includes all the performance, scalability and compatibility features of a

hypervisor installed on disk, including full VMFS support across FC SAN, iSCSI SAN, and NAS,

and 4-way VSMP. Because it runs from flash memory, it’s extremely fast and ideal for diskless

configurations. It also offers enhanced security, because it runs without an operating system-

based console and is updated/patched much like firmware.

High

Performance Adapter Slots

The HS22V blade server includes two PCIe adapter slots. They support CFF (compact form

factor) cards: one standard-speed CIOv and one high-speed CFFh.

The BladeCenter PCI Express I/O Expansion Unit 3 (BPE3) adds 2 standard full-height/full-

length x16 physical/x8 electrical (4GBps) PCIe Gen 1 expansion card slots, supporting adapters

of up to 25W apiece to an HS22V. One BPE3 can be connected per HS22V blade, for a total of 3

available slots (1 in the blade and 2 in the expansion unit). Note: The BPE3 reserves the high-

speed CFFh expansion connector in the HS22V, leaving only the CIOv slot available.

Similarly, the optional BladeCenter PCI Express Gen 2 Expansion Blade 4 (BPE4) adds 2

standard full-height/two-third-length x16 physical/x16 electrical (16GBps) PCIe Gen 2

expansion card slots. These slots are capable of supporting two high-performance graphics

processing units (GPUs) of up to 75W apiece, for tremendous graphics processing performance.

Up to 4 of these expansion units can be attached to a single blade server (creating a 150mm 5-

wide server), for a total of 10 available slots (2 in the blade and 2 each in the expansion units;

maximum 2 GPUs). Note: The BPE4 does not reserve the high-speed CFFh expansion

connector in the HS22V, leaving both slots available in the server.

If I/O s

lots are a greater need than processors or memory, attaching multiple BPE4 I/O

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